Statistics - Probability Calculator - Distributions

Ribbon bar. Select the Statistics tab. In the Tools group, click Calculators and on the menu, select Distributions to display the Probability Distribution Calculator.

Classic menus. On the Statistics - Probability Calculator submenu, select Distributions to display the Probability Distribution Calculator.

This facility is used to compute, for various theoretical distributions and parameters (e.g., F, df1, df 2), either 1), the upper or lower tail areas, given a user-specified variate value (two sided probability values can be computed for symmetrical distributions; e.g., the normal distribution), or 2) the critical values, given a user specified probability value.

A variety of distributions is available as shown in the illustration below. For each distribution, you can specify whether the density function and distribution function graph icons will be drawn using fixed or non-fixed scaling.